I am using a 10v adapter with 2.16 firmware behind a Netgear DG834 router/modem. I have setup the 10v using a static IP address on our network and have opened ports 2427, 2727, 5060, 30000 - 30002, 32000 - 36000, and 49152 - 49193. I configured the 10v according to the BT website instructions for the 10v behind a third-party router.
I can telnet the adapter and the connection information shows as:
TEL number: 05601xxxxxx
Expire Time: 3600
Status: Registration OK
Registrar: bmnhb-02.bt.com:5060
Proxy: bmnhb-02.bt.com:5060
Service Domain: bmnhb-02.bt.com
Outbound Proxy: www.bbvservice-560127.bt.com:5060
Enable: Yes
The BBV light on the 10v is ON and I get the high-pitched dialtone. I can dial out, but calls only last about 8 seconds before cutting off. Incoming calls go straight to 1571, even though I have checked it is not set like this in self-care.
I can make SIP VoIP calls via Voipfone without any problems at all using a Siemens S450IP connected to the same Netgear router (only opening port 5060, all other ports closed). As an experiment, I tried to register my BT number on the S450IP. I managed to configure it and get it to register, but again calls failed in the same way as on the 10v.
Any suggestions as to what may be causing the problem before I abandon BT BBV altogether and commit to VoIP providers whose systems do what they say on the tin?? Life is too short...!